>>7
HP calculators support postfix, dumbass.
>>8
TI-89: 12MHz Motorola 68000, 256kB RAM, 2MB Flash memory
HP-50G: 203MHz ARM, 512kB RAM, 2MB Flash memory, SD card slot
Feature sets are roughly equivalent, with the HP coming out ahead because of RPN support. HP costs less by about $20.
Enjoy your crappy calculator.